The personalised greetings card website failed to deliver on a promise, made in a national TV advert, that all orders received 14:00 on 3 March would be delivered by courier on Sunday.

Social media analytics firm Brandwatch analysed the Twitter sentiment towards the brand, before and after the gaffe. It helped visualise how a broken promise can damage a brand.

In the week leading up to the 7 March, the brand received 6,477 mentions. These steadily increased as Mother’s Day grew closer, from 2 March (146), 3 March (238), 4 March (254) and 5 March (584). On Sunday, the mentions exploded to 1696, surpassed on Monday by 3448.

The mentions skyrocketed as did the negative sentiment, with complaints making up the vast majority of tweets.

Men were in the slight majority of complainees.

At the time, Moonpig told The Drum: "We've been working hard to put things right and by the end of Mother's Day almost all orders have been delivered. We hope our customers accept our sincere apologies.”

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